TY  - BOOK
AU  - Duggal, K N  .
AU  - Soni,J P  .
TI  - Elements of water resources engineering / 
SN  - 81  224  0807  9
U1  - 627.01 
PY  - 1996///
CY  - Newdelhi : 
PB  - New age international publishers , 
ER  -